package com.itheima.homework1.demo4;

public class KeyBoard extends Computer implements USB{
    @Override
    public void connect() {
        System.out.println("连接上了键盘....");
    }

    @Override
    public void exit() {
        System.out.println("拔出了键盘...");
    }

    public void input(){
        System.out.println("使用了键盘输入了 Helloworld");
    }
}
